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Current Protein & Peptide Science


ISSN (Print): 1389-2037
ISSN (Online): 1875-5550

Review Article

Protein Phosphatase Type 2C Functions in Phytohormone-Dependent Pathways and in Plant Responses to Abiotic Stresses

Author(s): Nguyen Nguyen Chuong, Xuan Lan Thi Hoang, Duong Hoang Trong Nghia, Thai Ngoc Trang Dai, Van-Anh Le Thi and Nguyen Phuong Thao*

Volume 22 , Issue 5 , 2021

Published on: 22 March, 2021

Page: [430 - 440] Pages: 11

DOI: 10.2174/1389203722666210322144442

Price: $65


Plants, as sessile organisms, are susceptible to a myriad of stress factors, especially abiotic stresses. Over the course of evolution, they have developed multiple mechanisms to sense and transduce environmental stimuli for appropriate responses. Among those, phosphorylation and dephosphorylation, regulated by protein kinases and protein phosphatases, respectively, are considered crucial signal transduction mechanisms. Regarding the latter group, protein phosphatases type 2C (PP2Cs) represent the largest division of PPs. In addition, the discovery of regulatory functions of PP2Cs in the abscisic acid (ABA)-signaling pathway, the major signal transduction pathway in abiotic stress responses, indicates the significant importance of PP2C members in plant adaptation to adverse environmental factors. In this review, current understanding of the roles of PP2Cs in different phytohormone-dependent pathways related to abiotic stress is summarized, highlighting the crosstalk between the ABA-signaling pathway with other hormonal pathways via certain ABA-related PP2Cs. We also updated the progress of in planta characterization studies of PP2Cs under abiotic stress conditions, providing knowledge of PP2C manipulation in developing abiotic stress-tolerant crops.

Keywords: Abiotic stress, dephosphorylation, phosphorylation, phytohormones, PP2Cs, ABA signaling.

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